Name ________________________ Period ________
Activity Sheet 3-2
Solving Linear Equations with Substitution
Directions: Substitute number(s) for variable(s) and solve and simplify the equation.
Example:
3x + 4y = _____ (– 5, 2)
3(–5) + 4(2) =
(–15) + (8) =
–7
1. 8x + 2y = ______
(– 3, 4)
11. y = 2x + b
b= ______
2. 2x – 4y = ______
(– 4, – 2)
12. y = – 9x + b
3. 7x – 5y = ______
( 3, – 4)
b= ______
(– 5, 9)
(– 2, 12)
13. y = 2x + b
b= ______
( , 2)
b= ______
(– 6, – 5)
4. 4x + 5y = 20
(0, _____ )
14. y = x + b
5. 2x – 4y = 12
( ______ , 0)
15. y = – x + b
6. 6x + 2y = 18
(0, _____ )
7. 9x – 3y = 27
( ______ , 0)
8. 2x – y = 10
( 0, _______ )
16. y = x + b
b= ______
17. y = – x + b
18. y = ax + b
b= ______
b= ______
b= ______
(– 6, 6)
(– , – )
(– 5, 10)
a = 3. (– 10, 3)
( ______ , 0)
9. x –2y = 10
( 0, _______ )
19. y = ax + b
b= ______ a = – 4. (–18, 5)
( ______ , 0)
10. 3x – 5y = 16
(0, _______)
( ______ , 0)
20. 3y = ax + b b= ______ a = – 5. (– 6, 9)